[hadoop-1.0.2] → hadoop jar hadoop-examples-1.0.2.jar wordcount /user/abhinav/input /user/abhinav/output
Warning: $HADOOP_HOME is deprecated.
****hdfs://localhost:54310/user/abhinav/input
12/04/15 15:52:31 INFO input.FileInputFormat: Total input paths to process : 1
12/04/15 15:52:31 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
12/04/15 15:52:31 WARN snappy.LoadSnappy: Snappy native library not loaded
12/04/15 15:52:31 INFO mapred.JobClient: Running job: job_201204151241_0010
12/04/15 15:52:32 INFO mapred.JobClient: map 0% reduce 0%
12/04/15 15:52:46 INFO mapred.JobClient: map 100% reduce 0%
我使用本指南在單個節點上設置了hadoop(http://www.michael-noll.com/tutorials/running-hadoop-on -ubuntu-linux-single-node-cluster /#run-the-mapreduce-job),我試圖運行一個提供的例子,但我陷入了地圖100%減少0%。什麼可能導致這個?Hadoop WordCount示例卡住地圖100%減少0%
如果你遵循邁克爾教程,我想你在/ usr/local/hadoop中安裝了hadoop。僅在此目錄中,找到tasktracker.log和其他日誌文件。檢查是否有任何錯誤是他們在這裏發佈 – 2012-04-15 21:43:39
這可能有助於http://stackoverflow.com/questions/32511280/hadoop-1-2-1-multinode-cluster-reducer-phase-hangs-for-wordcount-program/ 32551259#32551259 – 2015-09-13 20:15:22